Dump-car.



J. M.'WILGOX.

DUMP CAR.-

APPLICATION FILED 00T.23, 1912.

Pateusecl Mar.'10, 191* a SHEETS-BHEBT 1.

A21 zornemt;

JjM. WILGOX.

DUMP GAR.

APPLICATION FILED OCT. 23, 1912.

Patented Mar. 10, 1914.

3 SHEETS-SHEET 2.

J. M. WILGOX.

DUMP OAR.

- APPLIOATION IIL BD 00"1'.2 3, 1912 k 1,090.001. Patented Mar. 10, 19143 SHEETS-SHEET 3. PI 6. 4.

MUM/5556's Pi llillll llilf tllil lCliL JOHN M. WILCOX, or CLEVELAND,01110.

DUMP-CAR.

Specification of Letters Patent.

' atented Mar. :10. 1 91 Application filed October 23, 1912.. Serial No727.427.

To all wriioni it may con/(rm lie it; known that 1, JOHN M. \Vnict'ix, acitizen of the United States of Arncri 'a, residing at Cleveland, in thecounty of Cuya hog-a and State of Ohio, have invented ccrtain new anduseful Improvements in l)umpCars; and I hereby declare the following tobe a full, clear, and exact descrip tion of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

This invention relates to new and useful improvements in dump cars, andparticularly to cars in which the dumping, and righting actions arectlected by the agency o't n-cssurc 'tluid.

The objects of the invention are the pro vision ot'" a device of thischaracter which will be of more simple and rugged construction, morectlicicnt in operation, more easily and accurately controlled, moreeconomical in the use of compressed fluid, and less prone tounauthorised operation at the hands of vandals or in'ipropcr operationat the hands of careless or incompetent worlc men than other devices ofthis character heretofore employed; the, provision of an arrangement ofdimming apparatus whereby the dumping operation may be accurately andexactly controlled, may be arrested or reversed at any point. and may bectl'cctcd without the jar and racking oi, the supportin structure atpresent observable in most cars; the provision of a nmchanism of thischaracter which may be placed entirely under the control of the engineeror of some other authorized person stationed at a single central point,thereby preventing the operation of thesame by careless persons orvandais; the provision of a device of this char acter wherein theoperative mechanism may be located at such distance above the track asto be shielded from all danger of injury through derailment or contactwith ohstruc tions and without at the same time necessitating theraising, of the car body; the provision of new and improved means :forlocking the car body in horizontal position; the provision of new andimproved means for unlocking the car body previous to the dumpingaction; the provision of means whereby the functions of unlocking anddumping shall be performed by the movemeat of a single part; theprovision of means whereby upon the accidental failure l of th inchingme hanism, the dumpii'ig of the car can be absolutely prevented by thepressure lluid means, thus tlVOltllllgI danger to other trains on theroad; the provision of a dumping mechanism "a hcrchy a single cylindcris cmplrn'cd both for th dumping and the righting oi the car body, thussimplifying: the construction and lessening the strain upon the car; theprovision of a dumping construction wherein the Forces tending toincline and right the car are opposed and applied entirely through themechanisi'n of the dumping apparatus, and not through the structure ofthe car itself, thereby pre venting undue strains upon the car body andthe supported strm'rture; \vhile i'urthcr objects and adtantages willbecome apparent as the description proceeds.

(icncrally speaking, my invention may he dctined as (:OllSlStiIlg of thefeatures or construction and combination recited in the claims heretoannexed and illustrated in the drawings accon'ipanying and forming apart; hereof, wherein:

.l i we 1 an end elevation of a dump car ci'ihodying my invention; l 2is aside view of the central portion o the car; and Fig. 3 is a crosssectional view taken upon the line 3 of Fig. 1; Fig. 4 is a transversecroswscctional view taken on the line 4 and looking in the direc- 1 olFig. I) tion oi the arrows. the car body being shown in inclinedposition; Fig. 5 is a 'longitudiilal cross sectional view taken throughthe centor of the cylinder and of the operating parts of the car; andFigs. (rand Tare detail views of the clutches employed; Fig. 8 is adetail view of a form of valve which may be employed; and Figs. S) and10 are dctailvsectional views of the cylinders 33 and respectively.

The car platform as shown comprises dinally arranged sills 12-12 spacedapart upon opposite sides of the car axis and secured to the end membersin the usual manner. Tiltahly supported above the platform so producedis the car body 13 having trunon thecar platform so that the said carbody can be inclined to either side in the usual manner. The car body isprovided with movable sides or doors, shown at 16, which are mounted onthe car body by means of arms 17, the said armsbeing rignions 1.4journaled in standards 15 mounted cud members lt-1l and a pair oflongituof the bifurcated lever 30.

idly secured to said doors and pivot-ally secured t0 the ends of the carbody. Between held against endwise movement by being;

extended through the standards '24 clearly shown in Figs. 1 and Theinner end of each sleeve is formed with clutch teeth 27 Or similarengaging means, the ad jacent ends of these sleeves being spaced apartby a considerable distance as shown in Figs. 1 and 3. Slidably mountedupon the shaft 23 between these sleeves are two slidable clutch-spools28 and 28, each of which has its outer end formed with teeth or. othersuitable engaging means adapted to engage with the end of that sleevetoward which it may be shifted. Relative to tatiou between the spoolsand shaft is prevented by means of splines or feathers 29. Also theteeth carried by the spools are narrower than the spaces between theteeth 27 of the sleeves (or it other engaging devices are employed thesame are suitably formed so as to permit small amount of play or lostmotion), thus allowing the spools to be moved through a small anglebefore the arms are actuated. Theinner ends of the spools are spacedapart a considerable distance as shown in Figs. 1 and each spool beingswiveled to one of the arms 31 The opposite end of this lever issuitably connected to the piston rod 0i small cylinder 33 so as topermit the clutch-spools to be shifted along the shaft 23 by theactuation of this piston. Preferably the devices are arranged so thatthe piston 34: will normally rest at the center of this cylinder, themeans here illustrated consisting of balanced springs" arranged betweenveach end of the cylinder and said piston. Other expcdients may obviouslybe employed to effect this' ter of: the shatt 23 is rigidly secured acrank arm 43, the listanco between, the arms 3131 of the leverbemgsuliicicnt to permit the same to straddle this crank arm and toallow such movement of the spools merely inasmuch as neitherhorizohtality nor rigidity of mounting is essential to my invention, itbeing merely essential that such connection be had between the pistonand the moving part to which it is attached as will effect the movementof the one by the other.

In order to preventthe tipping of the car body and premature dumping ofits contents. the following arrangement is provided: Pivotally securedto each of the arms 17 is a depending leg 71 formed upon one' side witha downwardly facing shoulder 72 and at the opposite side with anupwardly facing shoulder 73. These legs being pivoted at the end of thecar, hang down closely adjacent to the-end members 11, which end memberscarry stops adapted to cooperate with the shoulders 72, 73 to limit themovement of those legs. The stop for cotiperation with the downwardlyfacing shoulder 72 illustrated at 7 l and is spaced an appreciabledistance below this shoulder during the time that the car body ismaintained in horizontal position. The stop which cooperates with theupwardly facing shoulder 73 is shown at 75 (Fig. 3), and is attached tothe end of a pivotcdstrap 76 so as to be displaceable into and out ofthe path of movement of the leg. This stop engages closely the shoulderof its corresponding leg when the car body is horizontal, therebypreventing; the tipping oi the same. A spring 77 secured to the strap 76normally holds the stop 75 in engaging position. This arrangement ispreferably duplicated ateach end and each side of the car.

Journaled to the car platform substantially longitudinally of the carare a pair of rock shafts 78- 78, one outside of each of the sills12--12, and to each end of each of those shafts is attached an arm 79having articulated to its free end a link 80 the opposite end of whichis pivoted to the end of the strap 76. Secured to each of the shafts78--78 at a point adjacent to the rock shaft 23 is a normally horizontalarm 81 to the- 'spective spools are in engagement with the to the handle:37 of the valve corresponding sleeves to overlap the end of the lever82 to which they are nearest.

The actuation of the various parts hereinbefore described is ell'ectcdand controlled by pressure liuid obtained from any suitable source.Under normal conditions the fluid will be compressed-air and the samewill be obtained from the locoi'notive, and through-- out the remainderof the specification I shall describe the operation of the device bysuch compressed air, although it will. be understood that I do notthereby-confine myself to the use of such fluid.

Preferably each car is provided with a storage tank 18 wherein may becontained the fluid necessary to the operation of the car body. While itof course, possible from a theoretical point of view that the car mightbe operated by air pumped d i- I'ectly to the various cylinders from thelocomotive, such an arrangement would en tircly prevent the operationot-the cars if the locomotive should be detached, as is sometimes donebefore the cars are dumped,

and would also greatly delay the dumpingof a long traiminasmuch as thelocomotive unless specially equipped, could not deliver air rapidlyenough to operate more than a limited number of cars at one time,whereas the provision of a tank with each car permits all of the cars tobe operated siinultauemisly and these tanks replenished at leisure; alsothe provision of a tank with each car permits the operation of thedumping mechanism with the least possible amount of (:lisarrangement ofthe air brake system. From this tank a pipe -il9 convrws the air to theworking cylinder. said pipe having eov'imi-ction with the diunpine endof the cylii'ulcr by means of the branch :71) and threeovay valve 52 andwith the righting end (If said cylinder by n'ioans ol the branch 51 andtln'ee vay valve 53. Mounted adjacent to the valve 52 is a. cylinder athaving a piston 55 therein provided with the usual piston rod 56 whichlatter is connected 52. A spring (30 coiiperating' with this pistonserves to hold the same near one end of the cylinder and to hold thevalve in such position as shall interrupt communicalion between thebranch 50 and the cylinder. while lumping: open the con'n'nunical'ionbetween the interior ol the cylinder and the outside air. Likewisesupported adjacent to the valve 5:; is a similar cylinder (i3 havingther in a piston (iet provided with t e usual piston rod as which latteris attached to the handle (,6 ol the valve 52 A spring (if) likewiseholds this piston toward one end ol' the cylinder thereby uutintaininothe valve in a position to prevent communication between the rcseu voii'L8 and the cylinder 20 and to establish comn'iunication between theinterior of the cylinder-and the outside air.

For governing the operation of the mechanism I have illustrated fourtrain pipes 86, 87, 88, and 89 respectively. The train pipe 86 isconnected by means ofthe branch 90 with one end of the cylinder 33,while the train pipe 87 is connected by means of the branch 91 with theopposite end of that cylinder. The train means of the branch 92 with thecylinder 54, while the train pipe 89 is connected by means 01 the branch92-3 with the cylinder 63. I-

have not shown any particular means for conveying air to the tank 18inasmuch as such means is well known in the prior art. Said tanks can besupplied with air either from one or more of the train lines hereinillustrated, or by means of a separate train. line, or from the brakesystem, or in any other convenient manner as will be well undm'stood bythose skilled in the art.

The operation of the device is as follows: sun:ing' the car body to bein horizontal position as illustrated. in Fig, l, the piston l to beretracted and the clutch spools 2S and 2H to be in neutral position asshown in Fig. 3, and the air reservoir -18 to be full of compressed air;the engineer knowing in which direction the cars are to be dumpedtttl)ll ll($ such variation of pressure in the pipes Staud 87 as toshift the piston 3i and thereby the clutch spools -l and BS" in such uise as to engage the clutch members upon the opposite side oi the carfrom the side upon which. the load is to be dumped. i\ccordinulv. it weassume that it is desired to dump the load upon the lcl'l-hand side ofthe car shown in Figs. l and 3, the clutch will be hifted so as to bringthe spool 28" into cng'aguanent with the sleeve adjacent th reto andsimultaucously to bring the arm F93 above the end ol' the adjacent leverit is obvious that at this time the other clutch spool 28 and the MM arm85 will be able to swing l'rcely without comin into contact with anyobstruction whatever. If now the engineer shall admit pressure to thetrain line 88 the piston 55. will be actuated to shift the valve andadmit pressure lluid from the reservoir 18 to the cylin' dcr 20displacing the piston 21. The lost motion between the clutch spool 28"and the [oath of the adjacent sleeve permits the arm R5 to be swungthrough a small angle prior to any movement of the arm 26. This movelncnl ol the arm 83* displaces the lever 82 and rocks the shaft 78thereby witlulrawing the stops 75 from the shoulders 73 of the legs Tlof that side of the car which is to be elevated. As soon as these stopshave been properly withdrawn the engagement hctwccn the teeth of theclutch spool and the sleeve will raise the arm 26 thereby elevating theright hand side of the car body and depressing the left-hand side asshown by the dotted lines in Fig. 1. The deprespipe 88 is connected by,

. throwingof the guarded against. During this return movc-.

advancing side of the piston.

' communication sion of the left. hand side of the car carries the legs71 at that side downwardly until the shoulders 7'2 thereof come incontact with the stops Tet after which the further movement of the legsis prevented. This then prevents the further movement of the arms 17 andsides 16 without obstructing the movement of the car body, which stillcontinues to move downwardly opening a gap between the sides and bottomfor the discharge of the load. Thus far ithas been assumed that nopressure has been introduced into the train pipe 89, the valve beingleft, inposition to permit the free escape to the atmosphere of the airat the It now it is desired to right the car, the pres ure in the trainline 88 is reduced, permitting the spring (10 to retract the piston andclose between the. tank l8 and cylinder 20, opening nnmunication betweenthat cylinder and the atmosphere. Xow it pressure he admitted to thepipe 89, the tank l8 will be placed in communication with the oppositeside of the piston 21 whereby the shaft 25 will be rocked in theopposite direction. The lost-'motion con nection beta cen the clutchspool 28 and the adjacent sleeve now causes the arm 26 to lag in theopposite direction thus permittin; the lever tion in advance of thereturn of the car body to the horizontal. In fact this lost n'iotion mayrender it impossible for the car body to be brought clear back to itsposition by means of the piston 21, althouglnthe momentum of the bodywill be sufficient to carry it the last few degrees of its returnmovement, whereupon the stops 75 will be drawn by the spring 77 intoengagement with the shoulders 73 ot the legs 71, and the car bodysecurely locked in position. It will be noted that the opposite side ofthe car body has been unlocked ing the dumping operation, whereforeovercar body is absolutely inent, the air by which the dumping operationwas effected has been-discharged from the cylinder 20 to the outerair'through the discharge port of the valve 52.

In the above description of the operation it was assumed that the valvewas set in discharging position during all of the time that the dumpingwas being effected; In practice this not the condition, and therein liesone of the important features of my invention. It is obvious from aninspection of Fi a 1 that the inclination of the car body involves alowering of the center of gravity of the same and its contents whichcauscs the same to fall to the limit of its movement with a veryforcible shock unless some means be adopted for restraining the same.Accordingly it is preferrcdto preface the ca r body and Y convenient inballastino; a road bed.

the car body has been righted and has been 82 to resume its initialPOSlat no time duiw theliumping operation by opening the valve so as toadmit pressure air to the forward side of the piston 21, thereafteradmitting air to the opposite side thereof by means of the valve Byproperly controlling the pressure within the train pipe 89, the operatorcan then regulate the rate of leakage of airthrough the alve 53, therebyabsolutely controlling the rate of inclination of preventing any of thehammering and aching of the car body and its supporting structure whichhas hitherto been so objectionable. In fact, the control is so exact asto permit the partially dumped ears to be restored to horizontalposition at wilLit' need should arise, or to regulate the ate ofdischarge of contents to the speed mostsuitable to the handling ofthesame as After lockcdby the stops 73, the pressure in the train lines8687 may again be equalized, permitting the return of the piston 3 k toits initial central position and thereby disengaging the clutch spool'28 or 28". The op eration of dumping the cars cannot now be performedby vandals inasmuch as the operation of the piston 21 would serve merelyto rotate the shaft. 23 without unlocking the car or exerting any strainwhatever upon the mechanism. Preferably the mechanism is arranged so asto permit the dumping, of the train only from" some central point whichmay be either the cngincefis cab or some position along the train.However, for the purpose of permitting; the operation of the cars asindependent units, 1 have 'llustrated cross connections between thevarious train lines, the same being provided with valves so that air canbe transferred from one to the other or to and from the tan: l8 thuspermitting the operation of each car separately.

While I haveneccssarily described my invention in detail, it is obviousthat a great many changes in point of construction, arrangement, andoperation can be ellected without: departing from the general operativcidea or lOSll'lf to any material degree the advantages 0. my invention.I All of such changes I therefore claim as within the scope of myprotection, except as the same may be anticipated in the prior art.

Having thus described my invention what I claim is 1. In a dump car, thecombination, with a supporting structure and a car body pivoted to saidstructure upon a horizontal axis so as to be tiltable upon either sideof said axis, of a fixed cylinder carried by said sup-' portingstructure, means for admitting fluid under pressure to said cylinder, apiston in said cylinder, and means whereby a single movement of saidpiston in one direction may be utiliaed to cause the inclination of saidcar body in either direction, and'the return movement of said said carbody.

2. In a dump car, the combination, with a supporting structure and anelongated car body pivoted thereto upon a sulastantially horizontal axisand adapted to be inclined in either direction about said axis, thebottom of said car body being spaced above said supporting structure, ofa cylini ler ca rried by said supporting structure beneath piston willright piston in the same direction, the other of 5 said tilting devicesbeing meanwhile disconr l l 4 said our body, a piston in said cylindcr,lmeans for admitting pressure fluid to one end of said cylinder tdisplace the piston therein, means TEOL crmnecting said piston to said.car body intermediate the ends thereof so as to incline the same ineither direction 'by such displacement of said piston, and means foradmitting pressure fluid to the opposite end of said cylinder forrestoring said car body to its initial position.

In a dump car, the combination, with a supporting structure and a carbody pivoted thereto upon a fixed horizontal axis so as to be inclinedthereabout in either direction, of means comprising a stationarycylinder and a movable piston therein for inclining said car body aboutits axis, pressure fluid connections to the opposite ends of saidcylinder whereby said piston may be operated in dill'erent directions,and means secured to said car body i iterlnediatc its ends and adaptedto be attached in operative relation to said piston whereby a movementof said piston in one given direction may be employed to ell'ectthedumping of the car body to either side.

. 4-. In a dump car, the combination, with a supporting structure, and aflat, elongated car body pivoted to said structure upon a horizontalaxis so as to be tiltable upon either side of said axis, of a cylindercarried by said supporting structure beneath said our body, means foradmitting fluid under pressure to said cylinder, a piston in saidcylinder, means whereby the movement of said piston in one direction maybe utilized to cause the inclination of said car body in eitherdirection, and means for retarding the escape ol? fluid from the otherend of: the cylinder whereby the inclination of the car body may becushioned in either d ire '2 ti on 5. In a dump car, the combination,with a supporting structure and a car body pivoted to said nll'llClllIOupon a horizontal axis so as to be Liltable upon either side of saidaxis, of a single cylinder carried by said supportingstructurc, a pistonin said cylinder, movable devices opcratively connected lo said pistonso as to be movable therewill tilting devices carried by the car bodviand means for connecting said movable devices to either of said tiltingdevices so as to ellcct the in lination of saidcar body in eitherdirection upon the movement of said nectcd from said movable devices.

6. In a dump car, the combination, with a supporting structure and a carbody pivoted to said structure upon a horizontal axis so as to betiltable upon either side of said axis, oi. a single cylinder carried bysaid sll] 301'tl11g structure, a piston in said cylinder, movabledevices opcratively connected to said piston so as to be movabletherewith, tilting devices carried by the car body, and means forconnecting said movable devices to said lilting devices so as to effectthe inclinatirm of said our body in either di reclicn upon the movementof said piston in the same direction, said tilting devices beingnormally disconnected from said piston.

T. In a dump car, the combination, with a supporting structure and a carbody pivoted thereto upon a substantially horizontal axis and adapted tobe inclined in either dircction about said axis, of a cylinder carriedby said supporting structure, a piston in said cylinder, means foradmitting pressure fluid tmeither end of said cylinder to displace thepiston therein to the other end, means for connecting said piston tosaid our body so that the forward movement may incline or tilt the sameand its return movement may right or restore the same, locking deviceswhereby the car body is normally held horizontal, and means operativeduring the first part of the dumping movement of the piston fordisconnecting said locking devices, said locking devices being arrangedfor re'e ngagement by not later than the conclusion of said righting,movement.

8. In a dump car, the combimltion, with a. supporting structure and acar body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either direction about said axis, of acylinder carried by said supporting strlwture, a piston in saidcylinder, means for admitting pressure fluid to either end of saidcylinder to displace the piston therein toward the opposite end, rigidmembers secured at opposite sides of said our body, said piston inoperative relation to either one of said rigid members, whereby said carbody can be inclined in either direction by the operation of said pistonin the same direction. I

9. In a dump car, the combination, with a supporting structure and a carbody pivoted thereto upon a substantially horizontal axis and adapted tobe inclined. in either direction about said axis, of a bylinder carriedby said supporting structure, a piston in aid cylinder, means foradmitting pres sure fluid behind said piston to displace the same,tilting members secured at opposite sides of said our body and normallydisengaged from said piston and means for conand means for connecting.oted thereto upon a substantially necting said piston in operativerelation to either one of said tilting members at will,

bers being inextensible and incompressible whereby said body can berestored to horizontal position by the actuation of said piston in theopposite direction.

10. In a dump car, the combination, With a supporting structure and acar body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either direction from the horizontal aboutsaid axis, of a cylinder carried bysaid supporting structure, a pistonreciprocable Within. said cylinder, means for admitting pressure fluidto either end of said cylinder whereby said piston may be moved fromeither end of the cylinder to the other end, mechanism for connectingsaid )iston to said car body so as to oscillate the same in eitherdirection from the horizontal, said mechanism being normallydisconnected whereby the unauthorized operation of the dumping means isprevented, and means under the cony'rol of the engineer for determiningthe posi ion of said mechanism.

11. In a dump car, the combination, withv a supporting structure and acar body pivhorizontal axis and adapted to be inclined in either direction from the horizontal about said axis, of a cylinder carried bysaid supporting structure, a piston reciprocable within said cylinder,means for admitting pressure ,tluid to either end of said cylinderwhereby said piston may be moved from either end of the cylinder to theother end, a movable member operatively connected to said piston andmovable to and fro therewith, tilting members secured to said car bodyat opposite sides ofits axis, and means for connecting either of saidtilting members to said mor able member whereby said our body may beinclined in either direction by the movement of said piston from one endof said cylinder to the other, the other of said tilting members beingmeanwhile free i to follow the movement of the car body.

12. In a dump car, the combination, with a supporting structure and acar body piv oted thereto upon a substantially horizon tal axis andadapted to be inclined in either direction from the horizontal aboutsaid axis, of a cylinder carried by said supportin structure, a pistonreciprocable within said cylinder, means for admitting pressure fluid toeither end of said cylinder whereby said piston may be reciprocated, amovable member operatively connected to said piston and movable to andfro therewith, tilting members secured to said car body at oppositesides of its axis, and fluid-pressure-operated devices whereby either ofsaid tilting members may be connected with said movable member wherebysaid car body may be inclined in either direction by the operation ofthe piston in the same direction. I

13. In a dump car, the combination, with a supporting structure and acar body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either direction from the horizontal aboutsaid axis, of locking means connected to said car body and to saidsupporting structure whereby the casual inclination of the car body isprevented, a cylinder carr' d by said supporting structure, a piston in1e within said cylinder, means including a lost-motion connection forconnecting said piston to said car body whereby the continued for- Wardmovement of said piston may incline the same, tripping mechanismfor-said looking means, and devices movable coincidentally with saidpiston and adapted to .operate said trip ing mechanism and release saidlocking mec ianism prior to tlhe/ inclination of said car body throughthe medium of said lost-motion connection.

14-. In a dump car, the combination, with axis and adapted to beinclined in either di rection from the horizontal about said axis oflocking means connected to said car bodv and to said supportingstructure whereby the casual inclination of the car body is prevented, acylinder carried by' said sup-- porting structure, a piston movablewithin said cylinder, a rigid link articulatedtosaid car body at eachside of its axis, means for connecting either of said linksto saidpiston, means for admitting-fluid pressure to said cylinder at eitherside of said piston, tripping mechanism for said locking means,

'and means whereby the early part of the movement of said piston mayoperate saidtripping mechanism and release said locking mechanism priorto any materialflincli nation of said car body.

15. In a dump car, the combination, with a supporting structure and acar body pivoted thereto upon a substantially horizontal a supportingstructure and a car bodypivoted thereto upon a substantially horizontalaxis and adapted to be inclined in either I direction about said axis,of a cylinder carried by said supporting structure, a piston in saidcylinder, a substantiallyhorizontal rock shaft journaled in saidsupporting structure, an arm-carried by said rock shaft, connectionsbetween said arm and said-piston, fluid pressure connectionato saidcylinder whereby said piston may be displaced and said shaft rocked,oscillable members supported adjacent to said sln t, ried bysaid oscilhble membersl tilting; mom bcrs secured to said car body and to saidarms, and means for connecting said shaft to either of said oscillablemembers so as to eiiect the inclination of said (likdff llfifilx in armseareither direction upon the movement of said rock shaft in the samedirection.

16. In a dump car, the combination, with a supporting structure and acar body pivot ed thereto upon a substantially horizontal axis andadapted to be inclined in either direction about said axis, of acylinder carried by said supporting structure, a piston in saidcylinder, means for admitting pressure fluid to either end of saidcylinder to reciprocate the piston therein, an arm pivoted for movementabout an axis substantially transverse to said cylinder, connectionsbetween said arm and said piston, oscillable members substantially inalinement with the axis of said arm, tilting members secured to said carbody, and to said oscillable members, means including a lost-motionconnection for connecting'said arm to either of said oscillable members,devices secured to said car body and to said supporting structurewhereby said car body is held against casual inclination, trippingmechanism whereby said locking devices may be rendered inoperative, andmeans movable with said arm aud.adapted to actuate said trippingmechanism prior to the operation of said tilting devices by the agencyof said lost-motion connection.

17. In a dump car, the con'ibination, with a supportingstructure and acar body pivoted thereto upon a substantially horizontal axis andadapted to be inclined incither direction about said axis, of a cylindercar ried by said supporting structure, a piston in said cylinder, amovable member operatively connected to said piston and movable to andfro therewith, fluid pressure connections to said cylinder whereby saidpiston and member may be displaced, tilting members secured to said carbody, clutch devices for connecting said movable member to one of saidtilting members so as to clfcct the inclination of said car body ineither direction upon the movement of said. rock shaft in the samedirection, and means [or normally maintaining said clutch devices indisen gaged position.

18. In a dump car, the combination, with a supporting structure and acar body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either direction about said axis, of acylinder carricd by said supporting structure, 'a piston in saidcylinder, a movable member operatively connected to said piston andmovable to and fro therewith, fluid pressure c0nneclions to saidcylinder whereby said piston and member may be displaced, tilting mem-rbcrs secured to said our body, clutch means whereby said. til'tingmcmbers can be con? ,nectcd to said movable member, and fluitgoperatcdmechanism. for the operatlon at said clutch means. y"

19. In a dump car, the combination, wfth a supporting structure and acar body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either direction about said axis, of acylinder carried by said supporting structure, a piston in saidcylinder, a movable member operatively connected to said piston andmovable to and fro thereudth, fluid pressure connections to saidcylinder whereby said piston and member may be displaced, liltingmembers secured to said our body, an auxiliary .cylinder carried by saidsupporting structure, a piston therein, means operated by saidlastmentioned piston for connecting, said movable member to said tiltingmembers. and fluid pressure connections to said auxiliary cylinderwhereby the operation of said means can be controlled.

20. In a dump car, the combination, with a smpporting structure and acar'body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either direction about said axis, of acylinder carricd by said supporting structure, a piston in saidcylinder, a movable member operatively connected to said piston andmovable to and fro therewith, fluid pressure connections to saidcylinder whereby said piston and member may be displaced, tiltingmembers secured to said car body, an auxiliary cylinder carried by said.supportin structure, a piston therein, clutch means connected to saidauxiliary piston for connecting said movable member to eitheroi saidtilting members, said clutch means being disengaged from both memberswhen said auxiliary piston .is in the middle of its cylinder andarranged to determine the opera lion oi either of said tilting membersdepending upon the direction of its displacement, balanced springsnormally maintaining said auxiliary piston at the middle of itscylinder, and fluid pressure connections whereby said piston can bedisplaced in either direction.

21. In a dump car, the combination, with a supporting structure and acar body pivoted thereto upon a substantially horizoptal and adapted tobe inclined in either direction about said axis, oi? u cylimlcr rarricdby said supporting structure. a piston,

in said cylinder, a substantially horizontal rock shaft journaled insaid supporting structure, an arm carried by said rock shaft,comtections between said arm and said piston, fluid pressure connectionsto said cyl- Jhuler whereby said piston may be displaced and saidsha'l't rocked, tilting members sccured to saul car body, and means forconnerting said tilting members to said shaft,

so that said our body will be inclined upon the roclunn ol the saidshaft.

In a dump car, the combination, with a supporting structure and a carbody rplv t d th r to upon a substantiallvborizontal axis, and adaptedto be inclined in either direction about said axis, oi a cylindercarried by said ,siuvpoii-ting structure, a piston in said cylinder,means for admitting pressure fluid to either end of said cylinder toreciprocate said piston, a movable member carried by said supportingstructure, connections between said movable member and said piston,whereby the same may be forced to move coincidentally therewith, atilting member secured. to said car body at each side of its pivot axis,means including a lost-motion connection for connecting said movablemember to either one of said tilting members, a locking device so uredto said our body at each side of its pivot axis, connections between oneof said locking devices and. the supporting structure arranged toprevent the movement of said our body in one direction, connectionsbetween the other of said. locking devices and the sup porting structurearranged to prevent the movement of said car body in the oppositedirection, a tripping device for each of said locking devices, and meansmovable coincidentally with said piston and adapted to actuate saidtripping mechanism and disengage said locking devices, whereby theappropriate locking means is disengaged prior to the inclination of thecar body through the agency of said lost-motion connection.

23. In a dumpcar, the'coml'iination, With a supporting structure and acar body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either directionabout said axis, of a cylindercarried by said supporting structure, a piston in said cylinder, meansfor admitting pressure fluid to either end of said cylinder toreciprocate said piston, a movable member carried" by said supportingstructure, connections between said movable member, and

said piston, whereby the same may be forced.

devices, and means movable coincidcntally. with said piston and in adance of any niatc'lial moven'ient of said car body 2111 adapted toactuate said tripping incchani i and disengage those locking deviceswhich are associated with the 'iarticulai' tilting mechanism underactuation, the remaining lOCklILQf devices being unaiircted.

I 24;. In a dump car, the combination, with a supporting structure and acar body pivoted thereto upon a substantially horizontal axis andadaptedto be inclined in either di rection about said axis, of a cylindercarried by said supporting structure, a piston in said cylinder, meansfor admitting pressure fluid toeither end of cylinder to reciprocatesaidpiston, a movable member carried by said supporting structure,connections between said movable member and said piston, whereby thesame may be forced to move to and fro therewith, a tilting membersecured to said car body at each side of its pivot axis, depending meanscarried by said car body, stop devices car ried by said supportingstructure and cooperating With said depending means, there being a stopdevice for each of said tilting members, whereby said car body isnormally held against inclination in-the direction in Which said tiltingmember would tend to incline the same, tripping mechanism for-each ofsaid step devices, engaging devices operated by the movement ofsaidpiston, and means for connecting said movable member to either oneof said tilting members and simultaneously arranging saidengagingdevices in a manner to permit it to operate the associated trippingmechanism.

25. In a dump car, the combination, 'With a supporting structure and acar body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either direction about said axis, of acylinder carried by said supporting structure beneath said car body andhaving its axis substantially parallel with the length of the car, apiston in said cylinder, rigid tilting members securedto said cdi body,means for connecting said tilting members to said piston so that theangle between said our botly and said supporting structure may bear a:

dbtinite relation to the displacement oi the said piston from the endotsaid cylinders, a source of fluid pressure supply, connections betweensaid source and each end of said cylinder, and a three-way valve in eachof said connections arranged to connect said cylinder either withsaidsource of fluid pressure or with the ol'itside air.

26. in a dump car, the qpmbination, With a supporting structure ,r'nd acar body pivoted thereto upon a silibstantially horizontal axis andadapted Etc be inclined vin either direction about sai axis, of acylinder carried bysaid suppg rting structure, a piston in saidcylinder, a s urce of pressure iluid, means including a thrcc-Vay valvefor admitting ')ressurc fluid from said source to either end of saidcylinder to reciprocate the piston therein, tilting members secured tosaid car body, means "ir connecting said piston to said tiltingmembers,springsnormally maintaining said valfve's nia position toestablish con'nnunicatioir betvi'een the interior of the cylinder andthe open air and to prevent communication between said cylinder andsource, a cylin er adjacent to eachof said valves and having a pistontherein, connections between each of said pistons and one of saidvalves, and pressure fluid connections to each of said cylinders wherebythe engineer or other central otlicer can govern the operation of thedumping mechanism.

27. In a dump car, the combination, with a supporting structure and acar body pivoted thereon upon a horizontal axis, of a cylinder carriedby said supporting structure, means for admitting air to each end ofsaid cylinder, a piston in said cylinder, a shaft operatively connectedto said piston so that the movement of the same will rock said shaft,arms loosely mounted on said shaft, clutch members carried by said arms,clutch members on said shaft and adapted to be brought into engagementwith the clutch members on said arms alternately, and means operativelyconnecting said arms with the car body so that the rocking of said shaftwill produce a tilting of the car body in the appropriate direction wheneither of said arms is locked to said shaft.

28. In a dump car, the combination, with a supporting structure and acar body pivoted thereto, of a cylinder supported below said car body,means for admitting air to' each end of said cylinder, a piston in saidcylinder, a piston rod connected to said piston, a shaft extendingtransversely of said supporting structure, means connecting said pistonrod to said shaft so that the movement of said piston rod will rock'said shaft, an arm loosely mounted on each end of said shaft, means forconnecting either of said arms with said shaft, and link meansconnecting each arm with the portion of said car body thereabove.

'29. In a dump car, the combination, with a supporting structure and acar body pivoted thereto upon a longitudinal axis, of a shaft supportedtransversely of said supporting structure, means for rocking sald shaft,an arm pivoted for movement about each end of said shaft, clutch meanswhereby either of said arms may be secured to said shaft, a clutchshifting lever, an air cylinder operativcly connected to said lever sothat the movement of the piston of said cylinder in one direction willshift the clutch lever in one direction and the movement of the pistonin the opposite direction will shift the clutch lever in the oppositedirection, and train lines communicating with the ends of said cylinderwhereby the operation of said clutch may be determined by thedifferences of pressure in said lines.

In testimony whereof, I sign the fore going specification, in thepresence of two witnesses.

JOHN M. \VILCOX,

\Vitnesses:

V. C. LYNCH, N. L. MCDONNELL.

